You can use these almost anywhere on your car truck or motorcycle. Common places are Parkers/DRL/City Lights, Map Lights, Boot/Trunk Lights, Number Plate and License Plate Lights, Side Indicator Lights, Gauge and Dashboard lights
You will simply need to remvoe your old bulb and install this new one in its place. If it doesnt immediately turn on flip it 180 degrees. No tools or special skills are required. Installation takes less than 10 seconds!